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Parent Categories

entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

living thing, animate thing go
a living (or once living) entity

organism, being go
a living thing that has (or can develop) the ability to act or function independently

microorganism, micro-organism
any organism of microscopic size

noun.animal

10 Subcategories

monad go
(biology) a single-celled microorganism (especially a flagellate protozoan)
intestinal flora go
harmless microorganisms (as Escherichia coli) that inhabit the intestinal tract and are essential for its normal functioning
virus go
(virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts
moneran, moneron go
organisms that typically reproduce by asexual budding or fission and whose nutritional mode is absorption or photosynthesis or chemosynthesis
bacteria, bacterium go
(microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission
microbe, bug, germ go
a minute life form (especially a disease-causing bacterium)
pathogen go
any disease-producing agent (especially a virus or bacterium or other microorganism)
protoctist go
any of the unicellular protists
protist, protistan go
free-living or colonial organisms with diverse nutritional and reproductive modes
microflora go
microscopic plants